Gordian III AE30 of Calchedon, Bithynia. AD 238-244. 14.85 g. 

M ANT GORDIANOC AY, laureate, draped and cuirassed bust right.
KALXADONIWN, Apollo standing front, looking left, holding branch and resting left hand on a lyre set on a column to right.

RecGen 109.

With permission of cngcoins.com, auction 133, Lot 211, Feb. 2016